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MHT CET 2025 Physics question

PhysicsUnits and MeasurementMHT CET 2025

The period of oscillting simple pendulum is where length '' is 100 cm with error 1 mm. Period is 2 second. The time of 100 oscillations is measured by a stopwatch of least count 0.1 s. The percentage error in gravitational acceleration 'g' is

Answer: (A)

Solution

From , , so . Length error: . The time for 100 oscillations is s, measured

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Question ID VK-102190